Scala type alias with type parameters

Question

Let the following type alias

class Container[T]
type MyInt = Container[Int]

Is it possible and how to declare a type parameter in a type alias, having tried

type MyInt2 = Container[T <: Int]    // error: ']' expected but '<:' found.

cchantep · Accepted Answer · 2014-08-13 08:45:31Z

22

You can do:

type MyInt2[T <: Int] = Container[T]

As for other members (e.g. def), type member must declare type parameter in its declaration/signature (left), not in the body (right).

answered Aug 13, 2014 at 8:45

cchantep

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